Accidental Energization Protection Gaepvoc (Ansi 27/50) - ABB RELION REX640 Technical Manual

Protection functions
Name Type
4.1.3.10 Technical data
Table 423: PHPVOC Technical data
Characteristic
Operation accuracy
Start time ,
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in inverse time mode
Suppression of harmonics
4.1.4

Accidental energization protection GAEPVOC (ANSI 27/50)

4.1.4.1 Identification
Function description
Accidental energization protection
4.1.4.2 Function block
Figure 224: Function block
1
Measurement mode = default, current before fault = 0.0 × I
phase with nominal frequency injected from random phase angle, results based on statistical
distribution of 1000 measurements
2
Includes the delay of the signal output contact
378
Values (Range)
5=off
2
Unit
Value
Depending on the frequency of the meas-
ured current and voltage:
f ±2 Hz
n
Current:
±1.5% of the set value or ± 0.002 × I
Voltage:
±1.5% of the set value or ±0.002 × U
Typically 26 ms
Typically 40 ms
Typically 0.96
±1.0% of the set value or ±20 ms
±5.0% of the set value or ±20 ms
-50 dB at f = n × f
IEC 61850 IEC 60617
identification identification
GAEPVOC U<,I>
, f = 50 Hz, fault current in one
n n
1MRS759142 F
Description
n
n
, where n = 2, 3, 4, 5,...
n
ANSI/IEEE C37.2
device number
27/50
REX640
Technical Manual